# cat /etc/systemd/system/kube-controller-manager.service
[Unit]
Description=kubernetes controller manager 

[Service]
ExecStart=/opt/k8s/bin/kube-controller-manager \
  --kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \
  --controllers=*,tokencleaner \
  --service-account-private-key-file=/etc/kubernetes/cert/ca-key.pem \
  --cluster-signing-cert-file=/etc/kubernetes/cert/ca.pem \
  --cluster-signing-key-file=/etc/kubernetes/cert/ca-key.pem \
  --use-service-account-credentials=true \
  --root-ca-file=/etc/kubernetes/cert/ca.pem \
#  --leader-elect=true \
  --service-cluster-ip-range=10.0.0.1/24 \
  --cluster-cidr=10.1.0.0/16 \
  --v=2

 [Install]
 WantedBy=multi-user.target